vua moi doc cung khong tin may nhung khi vao youtube..thi that su la noi da ga`...neu cac ban vao youtube and tim kiem strange sound in sky...thi hang loat video dieu ky la tat ca am thanh nghe giong nhu tieng ken trumpet..dong thoi...khong ai tao ra vi xay ra tren toan trai dat:

My, Canada, UC, Chau phi, A rap, Mexico...

Khong biet cai gi se xay ra nhung chua bao gio co mot cai am thanh nghe ghe nhu vay..nhu vay ngay tan the se den???

Chua co mot ai giai thich duoc am thanh nay tu dau toi...